package com.cn.ccp.servlet;

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.UUID;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.log4j.Logger;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

import com.cn.ccp.bean.FilePathBean;
import com.cn.ccp.service.course.FilePathService;
import com.cn.ccp.util.CCPContants;

@SuppressWarnings("serial")
public class LoadLoginImgServlet extends HttpServlet {
	private Logger log = Logger.getLogger(Upload.class);
	private FilePathService filePathService = null ;
	
	public FilePathBean getFilePaht(HttpServletRequest request){
		ServletContext servletContext = this.getServletContext();  
        WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);  
        filePathService = (FilePathService) ctx.getBean("filePathService") ;
        //上传课程图片，则上传到当前活动区域，
        //如果上传的是个人头像：如果该用户已经关联存储区域，则存在到该区域，否则存储到 
//        if(!courseImage && CCPContants.getUserBeanRequest(request).getFile_path_id() != -1)
//        	return filePathService.findFilePathById(CCPContants.getUserBeanRequest(request).getFile_path_id());
//        else
        	return filePathService.getFlagBean(); 
	}
	@SuppressWarnings("unchecked")
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		String uid = request.getParameter("uid");
		String savePath = CCPContants.SYS_PATH+"files"+File.separator + uid + File.separator;
		
		FilePathBean filePathBean = getFilePaht(request);
		if(filePathBean != null){
			savePath = filePathBean.getPath()+uid+ File.separator ;
		}
		File f1 = new File(savePath);
		log.info(savePath);
		if (!f1.exists()) {
			f1.mkdirs();
		}
		DiskFileItemFactory fac = new DiskFileItemFactory();
		ServletFileUpload upload = new ServletFileUpload(fac);
		upload.setHeaderEncoding("utf-8");
		List fileList = null;
		try {
			fileList = upload.parseRequest(request);
		} catch (FileUploadException ex) {
			return;
		}
		Iterator<FileItem> it = fileList.iterator();
		String name = "";
		String extName = "";
		while (it.hasNext()) {
			FileItem item = it.next();
			if (!item.isFormField()) {
				name = item.getName();
				long size = item.getSize();
				String type = item.getContentType();
				System.out.println(size + " " + type);
				if (name == null || name.trim().equals("")) {
					continue;
				}
				//扩展名格式：  
				if (name.lastIndexOf(".") >= 0) {
					extName = name.substring(name.lastIndexOf("."));
				}
				File file = null;
				do {
					//生成文件名：
					name = UUID.randomUUID().toString();
					file = new File(savePath + name + extName);
				} while (file.exists());
				File saveFile = new File(savePath + name + extName);
				try {
					item.write(saveFile);
					
					int filePathId = -1 ;
					try {
						filePathId = filePathBean.getId() ;
					} catch (Exception e) {
					}
					CCPContants.getFilePath(uid + File.separator+ name + extName, filePathService,filePathId  ,Integer.parseInt(uid));
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		}
		log.info(uid  + "/"+name + extName);
		response.getWriter().print(uid  + "/"+name + extName);
	}
}
